Yusen Atsuko Books

Dekoboko Sugar Days

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Yuujirou Matsukaze has been close friends with Rui Hanamine since the two of them were children. Back then, Yuujirou was the one who stood up for and took care of his adorable, soft-hearted friend....

Dekoboko Bittersweet Days

By Yusen Atsuko

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Tiny and adorable when they first met, Rui – still just as adorable – now looms over his boyfriend, Yuujirou. Though they were little more than best friends at first, the confusion over their true...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.